in the u.s. our dr. jennifer ashton is here. it's dig gusting. they found out that test, one out of seven wouldn't pass the test, that's conservative. >> this is precisely why i stay out of my own kitchen. but in actuality, erica, there are a significant number of food-borne illnesses in the country have year resulting in about 325,000 hospitalizations the cdc estimates and about 5,000 estimated deaths due to foodborne illness. >> it's serious. probably a number go unreported so the numbers could be potentially higher. >> absolutely. >> so, what is it? where are the germiest, grimiest, bacteria-laden spots we need to clean up? >> basically anywhere you put your hands from the second you walk in your kitchen. remember, you can potentially bring germs into your kitchen before you start cutting. anywhere from the faucet and sink to the refrigerator to the stove handles. everywhere. but these are really the biggest hot spots. they start really with what we use to clean our kitchens, which are sponges. >> this -- i can just say, this is a plea to everyone at home. if you're ever in my kitchen,